Receptacle closure



June 29 1926. v 1,590,682

w. P. HART,

RECEPTACLE CLOSURE FiledOct. 29, 1924 Patented June 29, 1926.

UNITED STATES WILLIAM P. HART, OF SOUTHBRIDGE, MASSACHUSETTS.

BECEPTACLE CLOSURE.

' Application filed October as, 1924. Serial No. 746,094.

My invention relates broadly to receptacles and more particularly to a seal for receptacles.

One of the objects of my invention 1S. to provide a closure for rece tacles having flexible walls, the closure eing so constructed that a liquid andair tight seal is insured.

Another object of my invention is to provide a closure for a receptacle wherein both a primary and secondary closure device is provided in cooperative re'lationshi with respect to the walls of the receptac e for insuring an air and liquid tight seal for the receptacle. v

Still another object of my invention is to provide a closure for a receptacle having walls which align substantially parallel with each other enabling a primary closure memher to be clamped over the edges of the recepta'cle by movement in a longitudinal direction providing a guiding surface for a secondary closure member which may he slipped over the primary closure member by longitudinal movement upon the primary closure member for forcing the primary c10 sure member into intimate contact with the walls of the receptacle insuring a substantially air and liquid tight seal for the contents of the receptacle.

A further object of my invention is to provide a closure for a receptacle having relatively soft flexible walls adapted to align with each other at one end, which closure may be readily placed upon the receptacle with minimum effort and labor on the part of the individual desiring to fill or close the receptacle.

M invention will be -more fully understoo from the specification hereinafter following by reference to the accompanying drawings, in which Figure 1 is a perspective view showing the receptacle closure of my invention in position upon the end of a flexible walled receptacle; Fig. 2 is a cross-sectional view taken through the receptacle closure on line 2-2 of Fig. 1; Fig. 3 shows the relationship of the rimary and secondary closure members loo ing at one end of the closure; Fig. 4 is a perspective view of the secondary closure member; Fig. 5 is a perspective view of the primary closure member; and Fig. 6 shows a modified construction of secondary closure member arranged to cofrom the receptacle.

operate with the primary closure member and slide longitudinally with respect thereto.

My nvention finds particular a plication to flexible walled receptacles whicli have'an open end through which contents are introduced and WlllCll. end must be subsequently closed and rendered tight against air and i liquid. Heretofore in t e art such closures have been relatively com heated and have not been readily at-tacha le or detachable It is the purpose of my present invention to provide a pair of sealing devices for a receptacle to insure a substantial seal for the receptacle. I term these closure members, a primary and a secondary closure for the reason that the first or primary closure contacts directly with the end walls of the receptacle with a pa1r of substantially arallel extending side portions adapted to c amp the end walls of "he receptacle therebetween. The primary closure member is substantially U-shaped in cross-section. This member is placed upon the end walls of the receptacle by flattening the walls together and then sliding the primary. closure member overthe said walls clamping the walls solidly together. The secondary closure member is also substantially U-shaped in cross-section of the same contour as said primary closure member. The secondary closure member is adapted to clamp the primary closure member by sliding longitudinally over a portion of the '11- mary closure member. To facilitate the iding of the secondary closure member upon the primary closure member I provide cuta; way portions at opposite ends of the primary closure member and means on the secondar closure member for s reading the U-shape side portions to a su cient degree to eliminate to a large extent frictional contact between the walls of the primary closure member and the secondary closure membeer in the process of scaling or unsealing the receptacle.

Referring more particularly to the drawings, reference character 1 designates the flexible walled receptacle with the end walls flattened against each other as indicated at 2 and extending parallel one to the other. In order to force the end walls 2 in intimate contact with each other to form a seal for the receptacle I provide a rimary closure member 3 substantially -shaped in contour and having a pair of fiat extending side walls 4 and 5 connectedby the longitudjnally extending portion 6. The side wall 4 is curved inwardly at 7- and 8 at each end thereof, while the side wall 5 is curved inwardly at 9 and 10 at each end thereof for introducing forces throughout the sealin zone 2--2' of the receptacle and at the ends thereof to insure an air and liquid tight seal. The secondary closure member is shown at 11 formed in substantially U shaped contour corresponding to the con tour of the rimary closure member 3. The secondary c osure member has a longitudinally extending portion 12 and side wall portions 14 and 15 which extend over the side wall portions 4 and 5 of the primary closure 3. -In-order to spread the side portions 14 and 15 of the secondary closure 11 to enable the secondary closure to be longitudinally laced upon the primary closure member 3% provide finger pieces 16 and 17 which may be pressed inwardly by .the fingers of the individual applying or removin the closure in order to relieve the inwa pressure of the secondary closure upon the primary closure. In this condition the secondary closure is readily slid over the primary closure and then the pressure restored by removing the fingers from the grips 16 and 17.

Fig. 6 shows a modified construction of the secondary closure member wherein a central portion is enlarged as represented at 18 forming a finger grip to enable the secondary closure to be readily moved longitudinally over the primary closure. It will be observed that I provide alead for the secondary closure upon the primary closure I by cutting away the metal at the points 19 plied as a closure for rubber receptacles and l particularly as a closure for a nurser. In'

receptacles of this class it is desirable to have a readily removable closure device forming a ti ht seal and yet being simple and practica in construction- It will be.

understood that while my invention is particularly desirable with receptacles of this kind that I do not intendthat it be limited for use with receptacles of any particular class and that modifications may be made and that no limitations upon the invention are intended otherthan those imposed by the scope vof the ap ended claim. What I claim an desire to secure by LetterS Patent of the United States is as follows A receptacle closure comprising .in combination with a flexible receptacle havin laterally separable sides, a U-shaped meta lie member having a pair of normally parallel extending side portions arranged to clamp opposite sides of said receptacle to-'- gether, said member having extended end portions bent towards each other for providing a sealing zone for said receptacle and a correspondingl shaped metallic clamp member arranged to slide longitudinally over said first mentioned member for maintaining a tight seal between said U-shaped metallic member and said receptacle.

WHJLIAM P. HART. 

